1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valentinak56 [21]
2 years ago
10

How much energy is generated from freezing 2.5 g water

Chemistry
1 answer:
zvonat [6]2 years ago
6 0
200 calories.
Explanation:
The (latent) heat of fusion of a material, is either one of:
1) the heat required to melt the material without
temperature change or
2) the heat removed from the material to freeze it
without temperature change.
For water this latent heat is 80 cal/g. Multiply this by
2.5 g to get 200 cal.
You might be interested in
Hydrogen and oxygen atoms react to form water by __________ electrons.
DedPeter [7]
D
Sharing
Formation of water is a covalent bond which involves the sharing of electrons between two reacting atoms so that both can attain the stable octet structure
4 0
2 years ago
Which missing item would complete this beta decay reaction?
madam [21]

Answer:

<h3>The answer is option A.</h3>

Hope this helps you

8 0
3 years ago
2. What is an example of a molecule<br> with different types of atoms?
agasfer [191]

Answer:

a compound

Explanation:

A molecule with multiple atoms is compound like water it's made up of 1 oxygen and two hydrogen.

4 0
3 years ago
On which energy level are the valence electrons for calcium (Ca) ?
zhannawk [14.2K]
The fourth (last) one in 2-8-8-2.
7 0
2 years ago
What causes the difference in bond angles in carbon dioxide and water?
egoroff_w [7]

Answer is: C) the fact that the number of lone pairs of electrons on the central atom is greater in the case of water.

Carbon(IV) oxide is nonpolar because CO₂ is linear molecule and the oxygen atoms are symmetrical (bond angles 180°).

Water is polar because of the bent shape of the molecule.

Oxygen atom in water molecule has sp3 hybridization. The bond angle between the two hydrogen atoms is approximately 104.45°.

Oxygen atom has atomic number 8, it means it has eight protons and eight electrons, so atom has neutral charge. Oxygen is a nonmetal.

Electron configuration of oxygen atom: ₈O 1s² 2s² 2p⁴.

Oxygen atom has six valence electrons , two lone pairs and two electrons that form two sigma bonds with hydrogen atoms.

Carbon is a chemical element with symbol C and atomic number 6, which means it has 6 protons and six electrons. Four valence electrons are in 2s and 2p orbitals.  

Electron configuration of carbon atom: ₆C 1s² 2s² 2p².  

In carbon dioxide, carban has sp hybridization with no lone pairs.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Alan's go-kart travels 1750 feet per minute, and Barry's go-kart travels 21 miles perhour. Who's go-kart travels faster?
    6·1 answer
  • Calculate the formula/molecular mass of following
    15·1 answer
  • Which of the following would you expect to cause the evolution of a gas when added to hydrogen peroxide? a. A piece of raw carro
    8·1 answer
  • What happens when the amoeba proteus is placed in distilled water?
    15·1 answer
  • How does an objects mass influence how much force is needed to change its motion?
    13·2 answers
  • suppose you mix food coloring in water to make it blue. Have you made a solution or suspension. Explain........PLZ HELP
    15·1 answer
  • Explain why metals can conduct electricity and heat well
    12·1 answer
  • Explain why you can't just make gold out of a random yellow substance like straw or urine.
    8·1 answer
  • Nonmetallic elements form ions by ____________
    9·1 answer
  • How do i use endothermic change in a sentence?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!